A data company that got its start above a Faneuil Hall Marketplace tavern is expanding its office footprint in downtown Boston for the second time in three years, this time leasing nearly 57,000 square feet at 225 Franklin St.

DataRobot will relocate in September 2019. The company subleased 30,000 square feet previously occupied by PayPal at One International Place in 2016.

The transaction brings 225 Franklin St.’s occupancy to nearly 90 percent. Newmark Knight Frank represented owner Oxford Properties Group as well as DataRobot.

“DataRobot selected 225 Franklin St. due to it having three contiguous floors available that featured generous natural light, efficient floor plates and possible future expansion opportunities,” NKF Director Ben Sutton said in a statement.

Founded in 2012, DataRobot has received $225 million in funding from investors including New Enterprise Assoc. and Sapphire Ventures. A spokesman for DataRobot declined to comment on the company’s workforce size and expansion plans.

Completed in 1965, 225 Franklin St. contains 943,605 square feet of class A office space.